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EFFECT OF FOLIAR APPLICATION OF GLYCINEBETAINE ON YIELD COMPONENTS OF DROUGHT-STRESSED TOBACCO PLANTS

Published online by Cambridge University Press:  17 April 2001

P. C. AGBOMA ,
P. PELTONEN-SAINIO ,
R. HINKKANEN  and
E. PEHU
P. C. AGBOMA
Affiliation:
Department of Plant Production, PO Box 27, FIN-00014 University of Helsinki, Finland
P. PELTONEN-SAINIO
Affiliation:
Department of Plant Production, PO Box 27, FIN-00014 University of Helsinki, Finland
R. HINKKANEN
Affiliation:
Cultor Ltd Technology Centre, Kyllikinportti 2, FIN-02460 Kantvik, Finland
E. PEHU
Affiliation:
Department of Plant Production, PO Box 27, FIN-00014 University of Helsinki, Finland
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Abstract

Two glasshouse experiments were conducted at the Department of Plant Production, University of Helsinki, Finland, to study the effect of foliar application of aqueous 0.1 and 0.3M glycinebetaine on leaf growth of drought-stressed tobacco (Nicotiana tabacum L.) cv. Samsun. Leaf nitrogen and glycinebetaine concentrations were estimated periodically. After 16 days of treatment, leaves were harvested, and fresh and dry weights, and area determined. The number of total and green leaves was also recorded. Significant increases in leaf fresh and dry weights, and area were associated with glycinebetaine application, especially when drought was induced early. The application of 0.3M glycinebetaine reduced leaf area duration. Residual leaf glycinebetaine content remained high 16 days after application. The results indicate that exogenous glycinebetaine has the potential to improve the drought tolerance of leaf tobacco.

Type
Research Article
Information
Experimental Agriculture , Volume 33 , Issue 3 , July 1997 , pp. 345 - 352
Copyright
© 1997 Cambridge University Press

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